JP2011156830A - Connection member - Google Patents

Abstract

The present invention provides a connecting member capable of preventing gas and / or hot air in a molding machine from coming into contact with powder particles supplied to the molding machine.
[Solution]
In the connecting member whose upper end is connected to the hopper 2 for storing the material and whose lower end is connected to the molding machine 3, there are a passage for allowing the material to pass in the vertical direction, and a large number of intake portion side penetrating through the passage. A hole 32 and two exhaust part side through holes 33 that are formed below the intake part side through hole 32 and are spaced apart from each other and are exhausted from the inside of the passage. By exhausting from the through-hole 33, an air flow sucked from the intake-portion-side through-hole 32 and descending in the passage, and an airflow discharged from the exhaust-portion-side through-hole 33 at the lower end portion of the passage are formed. The gas (water and volatile components contained in the material) and / or hot air flowing into the passage from the barrel 6 is regulated by an air flow descending in the passage, and from the exhaust part side through hole 33. The air is exhausted from the passage by the exhausted airflow.
[Selection] Figure 2

Description

  The present invention relates to a connecting member that connects a storage tank for storing a material and a molding machine.

  Conventionally, resin pellets as a material for resin molding are fed from a feeding hopper to a melt molding machine including a cylinder and a screw, such as an extrusion molding machine or an injection molding machine. The resin pellets are heated and melted in the melt molding machine and then molded into a predetermined shape.

  However, the resin pellets may be oxidized and deteriorated by heating in the cylinder. In that case, molding defects such as yellowing occur in the obtained molded product.

  In order to prevent such molding defects, for example, it has been proposed to reduce the oxygen concentration in the charging hopper by reducing the pressure in the charging hopper (see, for example, Patent Document 1).

Japanese Patent Laid-Open No. 6-832

  However, in the above-described melt molding machine, gas volatilized from the resin pellets by heating in the cylinder, atmospheric gas (hot air) such as air heated in the cylinder flows into the charging hopper.

  For this reason, gas and / or hot air may come into contact with the resin pellets in the charging hopper to cause molding defects.

  Therefore, an object of the present invention is to provide a connecting member that can prevent or reduce the contact of gas and / or hot air with the material supplied to the molding machine.

  In order to solve the above-described problem, the invention described in claim 1 is a connecting member in which an upper end portion is connected to a storage tank storing material and a lower end portion is connected to a molding machine, and is in a vertical direction. And at least one air inlet for sucking air into the passage, and at least one air outlet for exhausting the air from the passage formed at a distance in the vertical direction with respect to the air inlet. And at least one of the intake port and the exhaust port is formed in plural.

  According to such a configuration, at least one intake port that sucks air into the passage that allows the material to pass in the vertical direction, and at least one intake port that is formed at a distance from the intake port in the vertical direction and exhausts from the passage. And at least one of the intake port and the exhaust port is formed in plural.

  Therefore, at least one of the intake port and the exhaust port can intake and / or exhaust air from a plurality of locations into the passage.

  Thereby, the air flow from the intake port to the exhaust port in the passage can be generated so as to be directed in the vertical direction, and the gas (gas volatilized from the material) and / or hot air flowing into the passage from the molding machine, In the passage, the air can be sent from the intake port to the exhaust port in the vertical direction.

  As a result, gas and / or hot air flowing into the passage from the molding machine can be exhausted from the exhaust port, and the material (the material stored in the storage tank and / or the material in the passage) and / or the passage It is possible to prevent or reduce the contact of the gas and / or hot air in the molding machine with the inner wall.

  The invention according to claim 2 is characterized in that, in the invention according to claim 1, the intake port is formed above the exhaust port.

  According to such a configuration, it is possible to generate an air flow from the upper intake port to the lower exhaust port.

  Therefore, since the gas and / or hot air flowing into the passage from the molding machine can be surely exhausted from the exhaust port so as to be suppressed from above, the material (the material stored in the storage tank and / or in the passage) Material) and / or gas and / or hot air in the molding machine can be more reliably prevented or reduced from contacting the inner wall of the passage.

  According to a third aspect of the present invention, in the first or second aspect of the present invention, the plurality of the intake ports and / or the exhaust ports provided at intervals in the circumferential direction of the passage. It is characterized by having.

  According to such a configuration, a plurality of intake ports and / or exhaust ports are formed in the circumferential direction of the passage.

  Therefore, intake and / or exhaust can be performed from a plurality of locations in the circumferential direction.

  As a result, it is possible to generate an air flow in the vertical direction with a uniform pressure in the horizontal direction in the passage.

  According to a fourth aspect of the present invention, in the invention according to any one of the first to third aspects of the present invention, a plurality of the intake ports and / or the exhaust ports are spaced apart in a range extending over the entire circumferential direction. It is characterized by being formed with a gap.

  According to such a configuration, gas and / or hot air can be sent from the intake port to the exhaust port in all circumferential directions.

  Therefore, the gas and / or hot air flowing into the passage from the molding machine can be exhausted more efficiently.

  The invention according to claim 5 is the invention according to any one of claims 1 to 4, wherein the intake port and / or the exhaust port is formed longitudinally along the circumferential direction of the passage. It is characterized by that.

  According to such a configuration, the intake port and / or the exhaust port intake or exhaust air from the longitudinal opening in the circumferential direction.

  Therefore, the airflow from the intake port to the exhaust port in the passage can be generated with a predetermined width in the circumferential direction and sent in the vertical direction.

  Thereby, the gas (gas volatilized from the material) and / or hot air flowing into the passage from the molding machine can be sent from the intake port to the exhaust port with a predetermined width in the circumferential direction.

  As a result, the gas and / or hot air flowing into the passage from the molding machine can be exhausted uniformly in the circumferential direction.

  The invention according to claim 6 is the invention according to any one of claims 1 to 5, wherein the passage is formed in a cylindrical shape extending in a vertical direction, and the intake port and the exhaust port are A plurality of each are formed so as to be arranged at equal intervals in the circumferential direction.

  According to such a configuration, intake and exhaust can be performed at equal intervals in the circumferential direction of the passage, and gas and / or hot air can be sent from the intake port to the exhaust port at an equal ratio in the radial direction of the passage. .

  As a result, the gas and / or hot air flowing into the passage from the molding machine can be exhausted more efficiently.

  In addition, according to a seventh aspect of the present invention, in the invention according to any one of the first to sixth aspects, at least a part of the intake port and the exhaust port overlap each other when projected in the vertical direction. It is characterized by being arranged in.

  According to such a configuration, the airflow sucked from the intake port is exhausted from the exhaust port without turning in the circumferential direction.

  Thereby, it is possible to prevent the airflow sucked from the intake port from being disturbed on the way to the exhaust port, and it is possible to prevent gas and / or hot air from being entrained in the airflow from the intake port to the exhaust port. .

  As a result, the gas and / or hot air flowing into the passage from the molding machine can be more reliably exhausted from the exhaust port.

  The invention according to claim 8 is the invention according to any one of claims 1 to 7, further comprising a passage forming member that forms the passage, and the intake port and the exhaust port are provided in the passage forming member. It is characterized by being opened.

  According to such a configuration, the intake port and the exhaust port directly intake or exhaust air into the passage.

  Therefore, intake or exhaust can be performed in the passage.

  Further, the invention according to claim 9 is a connecting member in which an upper end portion is connected to a storage tank for storing material and a lower end portion is connected to a molding machine, and a passage through which material passes vertically. A suction port that sucks air into the passage, and a single exhaust port that is formed at a distance from the suction port in the vertical direction and exhausts from the passage. Or the said exhaust port is formed in the longitudinal direction along the said circumferential direction, It is characterized by the above-mentioned.

  According to such a configuration, the intake port and / or the exhaust port intake or exhaust air from the longitudinal opening in the circumferential direction.

  Therefore, the airflow from the intake port to the exhaust port in the passage can be generated with a predetermined width in the circumferential direction and sent in the vertical direction.

  Thereby, the gas (gas volatilized from the material) and / or hot air flowing into the passage from the molding machine can be sent from the intake port to the exhaust port with a predetermined width in the circumferential direction.

  As a result, the gas and / or hot air flowing into the passage from the molding machine can be exhausted uniformly in the circumferential direction.

  The invention according to claim 10 is an air flow forming method, wherein the upper end is connected to a storage tank for storing the material, and the lower end is connected to the molding machine in the vertical direction. A passage through which the air passes, at least one air intake port for taking air into the passage, and at least one air exhaust port formed in the vertical direction with respect to the air intake port and exhausted from the passage, The exhaust port is provided so as to face the passage, and sucks air into the passage from the intake port and exhausts the exhaust port from the intake port along the vertical direction in the passage. And the exhaust port exhausts the air flow from the upstream side in the direction from the intake port to the exhaust port.

  According to such a method, the connection member is formed with at least one intake port for sucking in the passage through which the material passes in the vertical direction, and spaced from the intake port in the vertical direction. At least one exhaust port for exhausting air is provided so as to face the passage.

  Therefore, it is possible to generate an airflow from the intake port to the exhaust port in the passage so as to be directed in the vertical direction, and to exhaust the airflow from the upstream side in the direction from the intake port to the exhaust port directly from the passage. it can.

  Thereby, the gas (gas volatilized from the material) and / or hot air flowing into the passage from the molding machine can be sent from the intake port to the exhaust port in the vertical direction and exhausted as it is.

  As a result, with a simple configuration, the gas and / or hot air flowing into the passage from the molding machine can be exhausted from the exhaust port, and the material (the material stored in the storage tank and / or the material in the passage) and It is possible to prevent or reduce the contact of the gas and / or hot air in the molding machine with the inner wall of the passage.

  According to the first aspect of the present invention, the gas and / or hot air flowing into the passage from the molding machine can be exhausted from the exhaust port, and the material (the material stored in the storage tank and / or the passage in the passage) can be discharged. Material) and / or the gas and / or hot air in the molding machine can be prevented or reduced from contacting the inner wall of the passage.

  Further, according to the invention described in claim 2, since the gas and / or hot air flowing into the passage from the molding machine can be exhausted from the exhaust port so as to be suppressed from above, the material (in the storage tank) It is possible to more reliably prevent or reduce the contact of the gas and / or hot air in the molding machine with the material stored and / or the material in the passage) and / or the inner wall of the passage.

  According to the invention described in claim 3, it is possible to generate an air flow in the vertical direction with a uniform pressure in the circumferential direction in the passage.

  Moreover, according to the invention of Claim 4, the gas and / or hot air which flow in into a channel | path from a molding machine can be exhausted more efficiently.

  According to the fifth aspect of the present invention, the gas and / or hot air flowing into the passage from the molding machine can be exhausted uniformly in the circumferential direction.

  Further, according to the invention described in claim 6, the gas and / or hot air flowing into the passage from the molding machine can be exhausted more efficiently.

  Further, according to the seventh aspect of the present invention, the gas and / or hot air flowing from the molding machine into the passage can be more reliably exhausted from the exhaust port.

  Further, according to the eighth aspect of the invention, intake or exhaust can be performed with respect to the inside of the passage.

  According to the ninth aspect of the present invention, the gas and / or hot air flowing into the passage from the molding machine can be exhausted uniformly in the circumferential direction.

  According to the invention described in claim 10, gas and / or hot air flowing into the passage from the molding machine can be exhausted from the exhaust port with a simple configuration, and the material (stored in the storage tank) is obtained. Material and / or material in the passage) and / or the gas and / or hot air in the molding machine can be prevented or reduced from contacting the inner wall of the passage.

It is a side view which shows the connection of the hopper and molding machine in 1st Embodiment. It is an enlarged view of the airflow formation part shown in FIG. It is a schematic block diagram in the planar view of the airflow formation part shown in FIG. It is explanatory drawing for demonstrating the airflow in the airflow formation part shown in FIG. It is explanatory drawing for demonstrating the airflow in the airflow formation part of 2nd Embodiment. It is explanatory drawing for demonstrating the airflow in the airflow formation part of 3rd Embodiment. It is explanatory drawing for demonstrating the airflow in the airflow formation part of 4th Embodiment. It is an enlarged view of the airflow formation part in 5th Embodiment. It is a schematic block diagram in the planar view of the airflow formation part in 6th Embodiment.

(First embodiment)
FIG. 1 is a side view showing a connection between a hopper and a molding machine in the first embodiment. FIG. 2 is an enlarged view of the airflow forming portion shown in FIG. In the following description, the vertical direction is the same as the vertical direction.

  As shown in FIGS. 1 and 2, the molding machine system 1 includes a hopper 2 (an example of a storage tank) that stores a material such as resin pellets, a molding machine 3 that melt-molds the material stored in the hopper 2, and The airflow forming unit 4 (an example of a passage) that is provided between the hopper 2 and the molding machine 3 and that allows the material to pass from the hopper 2 to the molding machine 3 is provided.

  The hopper 2 is formed so that the substantially cylindrical upper portion and the substantially conical lower portion whose opening cross-sectional area decreases downward are continuous. In detail, the lower portion of the hopper 2 is formed in a substantially cylindrical shape that is reduced in diameter as it goes downward and then extends downward. Further, a flange portion 5 for connecting to the airflow forming portion 4 is provided at the lower end portion of the hopper 2.

  The flange portion 5 is formed at a lower end portion of the hopper 2 in a substantially annular shape protruding toward the radially outer side of the hopper 2. The flange portion 5 is formed with an insertion hole (not shown) for inserting a bolt 28 (described later) of the connecting member 15 (described later) so as to penetrate the flange portion 5 in the vertical direction.

  The molding machine 3 includes a barrel 6 and a screw 7.

  The barrel 6 is formed in a substantially cylindrical shape extending in the horizontal direction. Further, a discharge port 9 for discharging the material melted in the barrel 6 is formed at one end portion in the longitudinal direction of the barrel 6 (left end portion on the paper surface). Further, at the other end portion in the longitudinal direction of the barrel 6 (right end portion on the paper surface), a material charging port 8 penetrating the upper end portion of the barrel 6 in the vertical direction is formed at the upper end portion.

  The screw 7 is rotatably disposed in the barrel 6.

  The barrel 6 is provided with a joint portion 23 so as to communicate with the material input port 8.

  The joint portion 23 includes a cylindrical portion 27 and a flange portion 26, and is fixed to the upper end portion of the molding machine 3 by welding or the like so as to surround the material charging port 8.

  The cylindrical portion 27 is formed in a substantially cylindrical shape extending upward, and is disposed so as to extend upward from the peripheral edge portion of the material charging port 8 of the molding machine 3. The cylindrical portion 27 has an inner diameter that is substantially the same as that of the material inlet 8 of the molding machine 3.

  The flange portion 26 is formed in a substantially annular shape that protrudes toward the radially outer side of the cylindrical portion 27 at the upper end portion of the cylindrical portion 27. Note that an insertion hole (not shown) through which a bolt 28 (described later) of the connecting member 15 (described later) is inserted into the flange portion 26 corresponds to an insertion hole (not shown) of the flange portion 5. It is formed through.

  FIG. 3 is a schematic configuration diagram in plan view of the airflow forming unit illustrated in FIG. 1.

  As shown in FIGS. 2 and 3, the airflow forming unit 4 includes an intake unit 11, a transport pipe 14, an exhaust unit 12, a pair of upper and lower packings 13, and a connecting member 15. The airflow forming unit 4 constitutes a connection member together with the joint unit 23.

  The intake portion 11 is formed in a substantially cylindrical shape extending in the vertical direction at the upper end portion of the airflow forming portion 4 and includes an intake portion main body 16 and a first punching metal 17 (an example of a passage forming member). .

  The intake portion main body 16 is formed in a substantially cylindrical shape that is thick in the vertical direction. The outer diameter of the intake section main body 16 is formed to be smaller than the outer diameter of the flange section 5. Further, the inner diameter of the intake section main body 16 is formed to be slightly larger than the inner diameter of the flange section 5.

  Further, the intake section main body 16 is formed with a staying section 18 and a pair of blowing ports 19.

  The stay portion 18 is cut out in a substantially rectangular shape in cross-section from the inner peripheral surface to the radially outer side from the upper end edge of the intake portion main body 16 to the front of the lower end edge.

  Both the air inlets 19 are formed so as to penetrate from the outer peripheral surface of the intake portion main body 16 to the staying portion 18 inward in the radial direction. Further, the two air inlets 19 are arranged to face each other in the radial direction of the intake section main body 16 (see FIG. 3). Specifically, the two air inlets 19 are formed in the airflow forming unit 4 so as to be arranged at an interval of 180 ° in the circumferential direction. Moreover, both the blow inlets 19 are open to the atmosphere.

  Note that an insertion hole (not shown) for inserting a bolt 28 (described later) of the connecting member 15 is formed in the intake body 16 so as to correspond to an insertion hole (not shown) of the flange portion 5. Has been.

  The first punching metal 17 is formed from a metal plate into a substantially cylindrical shape having a vertical length substantially equal to the vertical length of the air intake main body 16. The outer diameter of the first punching metal 17 is formed to be slightly smaller than the inner diameter of the intake portion main body 16.

  The first punching metal 17 is formed with a large number of intake portion side through holes 32 (an example of an intake port) penetrating along the radial direction of the first punching metal 17.

  The intake portion side through holes 32 are formed at intervals from each other in a range extending over the entire circumferential direction of the first punching metal 17. In addition, each intake portion side through hole 32 is formed smaller than the size of the material.

  The first punching metal 17 is fitted to the intake portion main body 16 so that the outer surface of the lower end portion contacts the inner surface of the lower end portion of the intake portion main body 16 (the portion where the staying portion 18 is not formed). ing.

  The transport tube 14 is formed in a substantially cylindrical shape extending in the vertical direction from colorless and transparent glass or plastic. The outer diameter of the transport pipe 14 is formed larger than the inner diameter of the intake section main body 16, and the inner diameter of the transport pipe 14 is formed slightly smaller than the inner diameter of the intake section main body 16. The transport pipe 14 also functions as a viewing window for viewing the material supplied from the hopper 2 to the molding machine 3.

  The exhaust portion 12 is formed in a substantially cylindrical shape that is thick in the vertical direction at the lower end portion of the airflow forming portion 4, and includes an exhaust portion main body 20 and a second punching metal 21. The exhaust part 12 is not particularly limited as long as it is arranged in the vicinity of the lower end part of the airflow forming part 4, but is preferably arranged at the lowermost part of the airflow forming part 4.

  The exhaust part body 20 is formed in a substantially cylindrical shape having substantially the same diameter as the intake part body 16 of the intake part 11. Further, the exhaust part main body 20 is formed with a staying part 24 and a pair of suction ports 25.

  The stay portion 24 is cut out in a substantially rectangular shape in cross section from the inner peripheral surface to the radially outer side at the approximately vertical center of the exhaust portion main body 20.

  The inner diameter of the exhaust body 20 above the staying part 24 is smaller than the outer diameter of the second punching metal 21. Further, the inner diameter of the exhaust part main body 20 below the staying part 24 is formed to be slightly larger than the outer diameter of the second punching metal 21.

  Both the suction ports 25 are formed so as to penetrate from the outer peripheral surface of the exhaust body 20 to the staying portion 24 inward in the radial direction. Further, the two suction ports 25 are arranged to face each other in the radial direction of the exhaust part body 20. Specifically, both the suction ports 25 are formed in the airflow forming unit 4 so as to be arranged at an interval of 180 ° in the circumferential direction. A suction blower 31 is connected to both the suction ports 25.

  The exhaust body 20 has a through hole (not shown) through which a bolt 28 (described later) of the connecting member 15 is inserted so as to correspond to an insertion hole (not shown) of the flange 5. Has been.

  The second punching metal 21 is formed in a substantially cylindrical shape having a length in the vertical direction corresponding to the metal plate, from the lower end edge of the exhaust part main body 20 to the upper end edge of the staying part 24. The second punching metal 21 forms a passage together with the first punching metal 17 and the transport pipe 14.

  The second punching metal 21 is formed with a large number of exhaust part side through holes 33 (an example of exhaust ports) penetrating along the radial direction of the second punching metal 21.

  The exhaust part side through holes 33 are formed at intervals from each other in a range extending over the entire circumferential direction of the second punching metal 21. Moreover, each exhaust part side through-hole 33 is formed smaller than the magnitude | size of material. It is formed smaller than the size of the material.

  The upper edge of the second punching metal 21 is in contact with the exhaust part body 20 above the staying part 24 from below, and the outer surface of the lower end part is the lower end part of the exhaust part body 20 (from the staying part 24). The exhaust portion main body 20 is fitted so as to be in contact with the inner surface of the lower portion.

  The first punching metal 17 and the second punching metal 21 are arranged so as to overlap when projected in the vertical direction. In other words, the suction part side through hole 32 of the first punching metal 17 and the exhaust part side through hole 33 of the second punching metal 21 are arranged so as to overlap when projected in the vertical direction.

  The packing 13 is formed in a substantially annular shape, and its inner diameter is smaller than the outer diameter of the transport pipe 14, and its outer diameter is larger than the outer diameter of the transport pipe 14. Has been. Further, the upper packing 13 is provided between the intake portion main body 16 and the transport pipe 14, and the lower packing 13 is provided between the exhaust portion main body 20 and the transport pipe 14.

  The connecting member 15 includes a bolt 28, a nut 29, and a cover 30.

  The bolt 28 is formed in a vertical length that can penetrate the flange portion 5, the airflow forming portion 4, and the joint portion 23 of the hopper 2 together, and a substantially hexagonal head is provided at an upper end portion thereof. ing.

  The nut 29 is formed in a substantially hexagonal shape corresponding to the bolt 28.

  The cover 30 is formed in a substantially cylindrical shape extending in the vertical direction, and covers the bolt shaft of the bolt 28 between the intake portion main body 16 and the exhaust portion main body 20.

  Then, between the flange portion 5 of the hopper 2 and the joint portion 23, an intake portion 11, an upper packing 13, a transport pipe 14, a lower packing 13, and an exhaust portion 12 are arranged in this order from above. The bolt 28 is inserted into each insertion hole (not shown), and the nut 29 is screwed to the lower end portion of the bolt 28, thereby connecting the hopper 2, the airflow forming unit 4, and the molding machine 3. That is, the connecting members (the airflow forming portion 4 and the joint portion 23) are connected to the flange portion 5 of the hopper 2 at the upper end portion (intake portion 11) and are connected to the molding machine 3 at the lower end portion (joint portion 23). ing.

  Next, the molding operation of the molding machine system 1 will be described.

  FIG. 4 is an explanatory diagram for explaining the airflow in the airflow forming unit shown in FIG. 1.

  In order to melt the material and form the molten material using the molding machine system 1, first, the material stored in the hopper 2 is supplied to the molding machine 3 through the airflow forming unit 4.

  At this time, the material supplied from the hopper 2 to the molding machine 3 passes through the passage (the first punching metal 17, the transport pipe 14, and the second punching metal 21) of the airflow forming unit 4 from the upper side to the lower side. 6 is supplied. Then, when the material is filled in the barrel 6, the material that does not fit in the barrel 6 stays in the passage of the airflow forming unit 4 or in the hopper 2.

  The upper end portion of the material is above the upper end portion of the airflow forming portion 4 (when the upper end portion of the material is positioned in the hopper 2), and the middle of the airflow forming portion 4 (the upper end portion of the material is Located in the passage of the air flow forming unit 4) or below the lower end of the air flow forming unit 4 (when the upper end of the material is located in the barrel 6). Alternatively, it is supplied from the hopper 2 to the molding machine 3 based on detection by a known level sensor (not shown).

  The material in the barrel 6 is conveyed toward the discharge port 9 by the rotation of the screw 7 while being heated and melted in the barrel 6. Thereafter, the melted material is discharged from the discharge port 9 and formed into a predetermined shape.

  At this time, moisture and volatile components (such as volatile organic substances) contained in the material are volatilized from the material melted in the barrel 6 to generate gas. In addition, air is heated in the barrel 6 to become hot air. The generated gas and / or hot air flows into the passage of the airflow forming unit 4 through the material inlet 8 of the barrel 6 and the joint unit 23.

  On the other hand, as shown in FIG. 4, air (or an inert gas such as nitrogen gas) is sucked into the airflow forming unit 4 from the blowing port 19 at the upper end. At the same time, the air in the airflow forming unit 4 is exhausted from the suction port 25 at the lower end by the suction blower 31.

  Then, the sucked air is supplied from the staying portion 18 into the passage through the suction portion side through hole 32 of the first punching metal 17 and flows in the passage from the top to the bottom.

  Thereafter, the air descending in the passage sequentially passes through the exhaust part side through hole 33 of the second punching metal 21 and the stay part 24 and is discharged from the suction port 25.

  That is, air is sucked into the airflow forming portion 4 from the intake portion side through hole 32, descends in the passage, and is discharged from the exhaust portion side through hole 33 at the lower end portion (second punching metal 21) of the passage. An air flow is formed.

  The gas and / or hot air that has flowed into the passage of the airflow forming unit 4 from the barrel 6 is restricted from rising by the airflow descending in the passage, and is also caused by the airflow discharged from the exhaust portion side through hole 33. The air is exhausted from the passage.

  According to this connection member (air flow forming portion 4 and joint portion 23), as shown in FIGS. 2 and 4, a large number of intake portion side through holes 32 for sucking air into a passage through which material passes vertically, A plurality of exhaust part side through holes 33 that are formed at intervals in the vertical direction with respect to the part side through holes 32 and exhaust from the passage are provided.

  Therefore, in the intake portion side through hole 32, the air can be sucked into the passage from many places, and in the exhaust portion side through hole 33, the air can be exhausted from many places.

  Thus, an air flow from the intake portion side through hole 32 to the exhaust portion side through hole 33 can be generated in the passage so as to be directed in the vertical direction, and gas and / or hot air flowing into the passage from the molding machine 3 can be generated. Can be sent in the vertical direction from the intake portion side through hole 32 to the exhaust portion side through hole 33 in the passage.

  As a result, the gas and / or hot air flowing into the passage from the molding machine 3 can be exhausted from the exhaust part side through hole 33, and the material (the material stored in the hopper 2 and / or the material in the passage) and It is possible to reliably prevent or reduce the contact of gas and / or hot air with the inner wall of the passage.

  Moreover, according to this connection member, as shown in FIG. 2 and FIG. 4, it is possible to generate an air flow from the upper intake portion side through hole 32 to the lower exhaust portion side through hole 33.

  Therefore, since the gas and / or hot air flowing into the passage from the molding machine 3 can be exhausted from the exhaust part side through-hole 33 so as to be pressed from above, the material (the material stored in the hopper 2 and the It is possible to more reliably prevent or reduce the contact of gas and / or hot air with (/ or the material in the passage) and / or the inner wall of the passage.

  Further, according to this connecting member, as shown in FIG. 2, the intake portion side through hole 32 and the exhaust portion side through hole 33 are formed in the circumferential direction of the first punching metal 17 and the second punching metal 21. Yes.

  Therefore, intake or exhaust can be performed from a number of locations in the circumferential direction.

  As a result, it is possible to generate an air flow in the vertical direction with a uniform pressure in the horizontal direction in the passage.

  Further, according to this connecting member, as shown in FIG. 2, the intake portion side through hole 32 and the exhaust portion side through hole 33 are formed at intervals in the entire range in the circumferential direction.

  Therefore, gas and / or hot air can be sent from the intake portion side through hole 32 to the exhaust portion side through hole 33 in all circumferential directions.

  Therefore, the gas and / or hot air flowing into the passage from the molding machine 3 can be exhausted more efficiently.

  Further, according to this connecting member, as shown in FIG. 3, the intake portion side through hole 32 and the exhaust portion side through hole 33 are arranged so as to overlap when projected in the vertical direction. It is said.

  According to such a configuration, the airflow sucked from the intake portion side through hole 32 is exhausted from the exhaust portion side through hole 33 without turning in the circumferential direction.

  Thereby, it is possible to prevent the airflow sucked from the intake portion side through hole 32 from being disturbed on the way to the exhaust portion side through hole 33, and the air flow from the intake portion side through hole 32 to the exhaust portion side through hole 33. It is possible to prevent gas and / or hot air from being entrained.

  As a result, the gas and / or hot air flowing into the passage from the molding machine 3 can be more reliably exhausted from the exhaust part side through hole 33.

  In addition, according to this connecting member, as shown in FIG. 2, the first punching metal 17 and the second punching metal 21 that form the passage are provided, and the intake portion side through hole 32 and the exhaust portion side through hole 33 are provided with the first punching metal 17 and the second punching metal 21. The first punching metal 17 or the second punching metal 21 is opened.

  Therefore, the intake portion side through hole 32 and the exhaust portion side through hole 33 directly intake or exhaust air into the passage.

  As a result, intake or exhaust can be reliably performed in the passage.

  Further, according to this air flow forming method, as shown in FIG. 4, the connection member has a large number of intake-portion-side through holes 32 that intake air into a passage that allows material to pass in the vertical direction, and the intake-portion-side through-holes 32. A large number of exhaust part side through-holes 33 that are formed at intervals in the vertical direction and exhaust from the passage are provided so as to face the passage.

  Therefore, in the passage, an air flow from the intake portion side through hole 32 toward the exhaust portion side through hole 33 is generated so as to go in the vertical direction, and from the upper side toward the exhaust portion side through hole 33 from the intake portion side through hole 32. The air current can be exhausted directly from the passage.

  Thereby, the gas and / or hot air flowing into the passage from the molding machine 3 can be sent in the vertical direction from the intake portion side through hole 32 to the exhaust portion side through hole 33 and exhausted as it is.

As a result, the gas (and / or hot air) flowing into the passage from the molding machine 3 can be exhausted from the exhaust portion side through hole 33 with a simple configuration, and the material (the material and / or the passage stored in the hopper 2). It is possible to more reliably prevent or reduce the contact of gas and / or hot air with the inner material) and / or the inner wall of the passage.
(Second Embodiment)
FIG. 5 is an explanatory diagram for explaining the airflow in the airflow forming unit of the second embodiment. In FIG. 5, members similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  In the first embodiment described above, the air intake portion 11 is provided at the upper end portion of the airflow forming portion 4, and the exhaust portion 12 is provided at the lower end portion of the airflow forming portion 4. However, in the second embodiment, the air intake portion 11 is formed with the airflow. The exhaust portion 12 may be provided at the upper end portion of the airflow forming portion 4.

  In the air flow forming unit 4 of the second embodiment, as shown in FIG. 5, air (or an inert gas such as nitrogen gas) is sucked from the air inlet 19 of the intake unit 11 at the lower end, and at the same time, The air in the forming unit 4 is exhausted from the suction port 25 of the exhaust unit 12 at the upper end by the suction blower 31.

  Then, the air sucked in the intake portion 11 is sucked from the stay portion 18 into the passage of the airflow forming portion 4 through the intake portion side through hole 32 of the first punching metal 17, and the inside of the passage is upward from below. It flows toward.

  Thereafter, the air rising in the passage passes through the exhaust part side through hole 33 and the stay part 24 of the second punching metal 21 in the exhaust part 12 and is discharged from the suction port 25.

  That is, in the passage of the airflow forming portion 4, airflow is drawn from the intake portion side through hole 32 and rises in the passage, and from the exhaust portion side through hole 33 in the upper end portion (second punching metal 21) of the passage. A discharged airflow is formed.

  And the gas and / or hot air which flowed into the passage of the airflow forming unit 4 from the barrel 6 rises in the passage by the airflow rising in the passage, and then, by the airflow discharged from the exhaust part side through hole 33, It is exhausted from the passage.

Also in the second embodiment, the same operational effects as those of the first embodiment described above can be obtained.
(Third embodiment)
FIG. 6 is an explanatory diagram for explaining the airflow in the airflow forming unit of the third embodiment. In FIG. 6, members similar to those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and description thereof is omitted.

  In the first embodiment described above, the air intake portion 11 is provided at the upper end portion of the airflow forming portion 4 and the exhaust portion 12 is provided at the lower end portion of the airflow forming portion 4. However, in the third embodiment, the air intake portion 11 is formed with the airflow. The exhaust part 12 may be provided at the upper end part and the lower end part of the part 4, and between them, that is, at the substantially vertical center of the airflow forming part 4.

  In the air flow forming unit 4 of the second embodiment, as shown in FIG. 6, when air (or an inert gas such as nitrogen gas) is sucked from the air inlet 19 of the intake unit 11 at the upper end and the lower end. At the same time, the air in the airflow forming unit 4 is exhausted by the suction blower 31 from the suction port 25 of the exhaust unit 12 in the substantially vertical center.

  Then, the air sucked from the upper intake portion 11 is supplied from the stay portion 18 into the passage through the intake portion side through hole 32 of the first punching metal 17 and flows in the passage from the upper side to the lower side. .

  Further, the air sucked from the lower intake portion 11 is supplied from the stay portion 18 into the passage through the intake portion side through hole 32 of the first punching metal 17, and the inside of the passage is directed from below to above. Flowing.

  Thereafter, the air that has descended in the passage and the air that has risen in the passage sequentially pass through the exhaust portion side through hole 33 of the second punching metal 21 and the stay portion 24 in the exhaust portion 12, and then the suction port. 25 is discharged.

  In other words, air is sucked into the passage of the airflow forming portion 4 from the upper intake portion side through hole 32, and is sucked from the lower intake portion side through hole 32 and is sucked from the lower intake portion side through hole 32 and rises in the passage. An air flow and an air flow discharged from the exhaust portion side through-hole 33 are formed at substantially the center in the vertical direction of the passage.

  The gas and / or hot air flowing from the barrel 6 into the passage of the airflow forming unit 4 rises in the passage due to the airflow rising in the passage, and is caused by the airflow descending in the passage substantially at the center in the vertical direction of the passage. , Its rise is regulated. Thereafter, the gas and / or the hot air are exhausted from the passage of the airflow forming portion 4 by the airflow discharged from the exhaust portion side through-hole 33 at approximately the center in the vertical direction of the passage.

Also in the third embodiment, the same operational effects as those of the first embodiment described above can be obtained.
(Fourth embodiment)
FIG. 7 is an explanatory diagram for explaining the airflow in the airflow forming unit of the fourth embodiment. In FIG. 7, members similar to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  In the first embodiment described above, the air intake portion 11 is provided at the upper end portion of the airflow forming portion 4, and the exhaust portion 12 is provided at the lower end portion of the airflow forming portion 4. However, in the fourth embodiment, the exhaust portion 12 is formed as an airflow. The intake portion 11 may be provided at the upper end portion and the lower end portion of the portion 4, and between them, that is, at substantially the center in the vertical direction of the airflow forming portion 4.

  In the air flow forming unit 4 of the second embodiment, as shown in FIG. 7, air (or an inert gas such as nitrogen gas) is sucked from the air inlet 19 of the intake unit 11 at the substantially vertical center. The air in the airflow forming unit 4 is exhausted by the suction blower 31 from the suction port 25 of the exhaust unit 12 at the upper end and the lower end.

  Then, the air sucked from the blowing port 19 in the substantially vertical center is supplied from the staying portion 18 into the passage through the suction portion side through hole 32 of the first punching metal 17, and the inside of the passage is lowered from above. Is divided into an airflow flowing toward the upper side and an airflow flowing upwardly from the lower side in the passage.

  Thereafter, the air rising in the passage passes through the exhaust part side through hole 33 of the second punching metal 21 and the stay part 24 in the upper exhaust part 12 and is discharged from the suction port 25.

  In addition, the air descending in the passage passes through the exhaust part side through hole 33 of the second punching metal 21 and the stay part 24 in the lower exhaust part 12 and is discharged from the suction port 25.

  That is, in the passage, the air that is sucked from the blow port 19 at the substantially central portion in the vertical direction and rises in the passage, the air flow that is sucked from the blow port 19 in the substantially central portion in the vertical direction and descends in the passage, An air flow discharged from the suction port 25 at the upper end of the air flow and an air flow discharged from the suction port 25 at the lower end of the passage are formed.

  The gas and / or hot air that has flowed into the passage of the airflow forming portion 4 from the barrel 6 is always restricted from rising by the airflow descending in the passage, and the exhaust portion side through hole 33 is formed at the lower end portion of the passage. Is exhausted from the passage of the airflow forming unit 4 by the airflow discharged from the airflow.

  On the other hand, for example, when the gas and / or hot air rises so as to travel through the material retained in the passage, and the rise of the gas and / or hot air cannot be completely regulated by the airflow descending in the passage, the gas And / or a part of the hot air may pass through the intake section 11.

  In such a case, the gas and / or hot air that has passed through the intake portion 11 rises in the passage due to the airflow rising in the passage, and then is discharged from the exhaust portion side through hole 33 at the upper end portion of the passage. The airflow is exhausted from the passage of the airflow forming unit 4.

Also in the fourth embodiment, the same operational effects as those of the first embodiment described above can be obtained.
(Fifth embodiment)
FIG. 8 is an enlarged view of an airflow forming unit in the fifth embodiment. In FIG. 8, the same members as those in the first embodiment are denoted by the same reference numerals as those in the first embodiment, and the description thereof is omitted.

  In the first embodiment described above, the first punching metal 17 and the second punching metal 21 are separated from each other by a large number in the range extending over all the circumferential directions of the intake portion side through holes 32 and the exhaust portion side through holes. In the fifth embodiment, as shown in FIG. 8, the first punching metal 17 and the second punching metal 21 are provided with an intake portion side slit 41 (an example of an intake port) and an exhaust portion side slit 42 ( An example of the exhaust port) is formed longitudinally along the circumferential direction.

  In the fifth embodiment, the first punching metal 17 is formed with two intake portion side slits 41 spaced apart in the vertical direction.

  The suction portion side slit 41 extends in the circumferential direction of the first punching metal 17 and penetrates the first punching metal 17 in the radial direction in the circumferential direction of the first punching metal 17, for example, over 180 ° and less than 360 °. It is formed as follows. In addition, the vertical length of each intake section side slit 41 is formed smaller than the size of the material.

  Further, three exhaust part side slits 42 are formed in the second punching metal 21 at intervals in the vertical direction.

  Similarly to the intake portion side slit 41, the exhaust portion side slit 42 extends in the circumferential direction of the second punching metal 21, and extends in the circumferential direction of the second punching metal 21, for example, over 180 ° and less than 360 °. It is formed so as to penetrate the punching metal 21 in the radial direction. Further, the length in the vertical direction of each exhaust portion side slit 42 is formed smaller than the size of the material.

  Then, air (or an inert gas such as nitrogen gas) is sucked from the air flow forming unit 4 and the blowing port 19 at the upper end, and at the same time, the air in the air flow forming unit 4 is sucked into the lower end by the suction blower 31. When exhausted from the suction port 25, the sucked air is supplied from the staying portion 18 into the passage through the suction portion side slit 41 of the first punching metal 17, and flows in the passage from the top to the bottom. .

  After that, the air descending in the passage sequentially passes through the exhaust portion side slit 42 of the second punching metal 21 and the stay portion 24 and is discharged from the suction port 25.

  That is, as in the first embodiment, air is sucked into the airflow forming portion 4 from the intake portion side slit 41 and descends in the passage, and at the lower end portion (second punching metal 21) of the passage, the exhaust portion side. An air flow discharged from the slit 42 is formed.

  The gas and / or hot air flowing into the passage of the airflow forming unit 4 from the barrel 6 is restricted from rising by the airflow descending in the passage, and by the airflow discharged from the exhaust portion side slit 42, It is exhausted from the passage.

  According to the connecting member of the fifth embodiment, the intake portion side slit 41 and the exhaust portion side slit 42 intake or exhaust air from the longitudinal opening in the circumferential direction.

  Therefore, it is possible to generate an air flow from the intake portion side slit 41 to the exhaust portion side slit 42 in the passage with a predetermined width in the circumferential direction and send it in the vertical direction.

  Thereby, the gas and / or hot air flowing into the passage from the molding machine 3 can be sent from the intake portion side slit 41 to the exhaust portion side slit 42 with a predetermined width in the circumferential direction.

As a result, the gas and / or hot air flowing into the passage from the molding machine 3 can be exhausted uniformly in the circumferential direction.
(Sixth embodiment)
FIG. 9 is a schematic configuration diagram in plan view of an airflow forming unit in the sixth embodiment. In FIG. 9, members similar to those of the first embodiment are denoted by the same reference numerals as those of the first embodiment, and description thereof is omitted.

  In the first embodiment described above, the first punching metal 17 and the second punching metal 21 are separated from each other by a large number in the range extending over all the circumferential directions of the intake portion side through holes 32 and the exhaust portion side through holes. However, in the sixth embodiment, as shown in FIG. 9, the intake portion side through hole 52 (an example of the intake port) and the exhaust portion side through hole 53 (an example of the exhaust port) are 180 in the circumferential direction. Two are arranged at intervals of °.

  In the sixth embodiment, as shown in FIG. 9, the first punching metal 17 has two intake portion side through-holes 52 spaced apart by 180 ° in the circumferential direction so as to face the blowing port 19. Is formed. Each intake portion side through hole 52 is formed smaller than the size of the material.

  Further, two exhaust part side through holes 53 are formed in the second punching metal 21 at intervals of 180 ° in the circumferential direction so as to face the suction port 25. Moreover, each exhaust part side through-hole 53 is formed smaller than the magnitude | size of material.

  Then, air (or an inert gas such as nitrogen gas) is sucked from the air flow forming unit 4 and the blowing port 19 at the upper end, and at the same time, the air in the air flow forming unit 4 is sucked into the lower end by the suction blower 31. When exhausted from the suction port 25, the sucked air is supplied from the staying portion 18 into the passage through the suction portion side through hole 52 of the first punching metal 17, and the inside of the passage is directed downward from above. Flowing.

  Thereafter, the air descending in the passage sequentially passes through the exhaust part side through hole 53 of the second punching metal 21 and the stay part 24 and is discharged from the suction port 25.

  That is, as in the first embodiment, air is sucked into the airflow forming portion 4 from the intake portion side through-hole 52 and descends in the passage, and the exhaust portion is formed at the lower end portion (second punching metal 21) of the passage. An airflow discharged from the side through hole 53 is formed.

  The gas and / or hot air that has flowed into the passage of the airflow forming unit 4 from the barrel 6 is restricted from rising by the airflow descending in the passage, and is also caused by the airflow discharged from the exhaust part side through hole 53. The air is exhausted from the passage.

  According to the connection member of the sixth embodiment, air can be sucked and exhausted at equal intervals in the circumferential direction of the passage, and gas and / or hot air are supplied from the intake portion side through hole 52 at an equal ratio in the radial direction of the passage. It can be sent to the exhaust part side through hole 53.

As a result, the gas and / or hot air flowing into the passage from the molding machine 3 can be exhausted more efficiently.
(Other embodiments)
In the first embodiment described above, the intake portion side through hole 32 and the exhaust portion side through hole 33 are arranged so as to overlap when projected in the vertical direction. The side through holes 33 may be arranged so as not to overlap when projected in the vertical direction.

  Also in this embodiment, the same operational effects as those of the first embodiment described above can be obtained.

  Further, in the fifth embodiment described above, two intake portion side slits 41 are formed and three exhaust portion side slits 42 are formed. However, the number of intake portion side slits 41 and exhaust portion side slits 42 is particularly limited. Instead, for example, one intake portion side slit 41 and one exhaust portion side slit 42 may be formed.

  Also in this embodiment, the same operational effects as those of the fifth embodiment described above can be obtained.

  In the sixth embodiment described above, two intake-portion-side through holes 52 and two exhaust-portion-side through-holes 53 are provided and arranged at an interval of 180 ° in the circumferential direction. The number and arrangement of the exhaust part side through holes 53 are not particularly limited. For example, three intake part side through holes 52 and three exhaust part side through holes 53 are provided and arranged at 120 ° intervals in the circumferential direction. Alternatively, four of each may be provided and arranged at an interval of 90 ° in the circumferential direction.

  Also in this embodiment, the same operational effects as those of the sixth embodiment described above can be obtained.

2 Hopper (storage tank)
3 Molding machine 4 Airflow forming part (connecting member)
5 Flange (connection member)
14 Transport pipe (passage)
17 First punching metal (passage, passage forming member)
21 Second punching metal (passage, passage forming member)
32 Air intake side through hole (intake port)
33 Exhaust section side through hole (exhaust port)
41 Suction side slit (inlet)
42 Exhaust section side slit (exhaust port)
52 Inlet side through hole (inlet)
53 Exhaust section side through hole (exhaust port)

Claims (10)

The upper end is connected to a storage tank that stores the material, and the lower end is a connection member connected to the molding machine,
With a passage that allows material to pass vertically,
At least one air inlet for drawing air into the passage;
Formed at an interval in the vertical direction with respect to the intake port, and at least one exhaust port for exhausting from the inside of the passage is formed,
A connection member, wherein at least one of the intake port and the exhaust port is formed in plural.   The connection member according to claim 1, wherein the intake port is formed on an upper side with respect to the exhaust port.   3. The connection member according to claim 1, wherein a plurality of the intake ports and / or the exhaust ports are arranged at intervals in the circumferential direction of the passage.   The connection according to any one of claims 1 to 3, wherein a plurality of the intake ports and / or the exhaust ports are formed at intervals in a range extending over the entire circumferential direction. Element.   The connection member according to claim 1, wherein the intake port and / or the exhaust port is formed in a longitudinal direction along a circumferential direction of the passage. The passage is formed in a cylindrical shape extending in the vertical direction,
The connection member according to claim 1, wherein a plurality of the intake ports and the exhaust ports are formed so as to be arranged at equal intervals in the circumferential direction. .   The connection member according to claim 1, wherein the intake port and the exhaust port are arranged so that at least a part thereof is overlapped with each other when projected in the vertical direction. A passage forming member that forms the passage;
The connection member according to claim 1, wherein the intake port and the exhaust port are opened in the passage forming member. The upper end is connected to a storage tank that stores the material, and the lower end is a connection member connected to the molding machine,
With a passage that allows material to pass vertically,
One intake port for drawing air into the passage;
Formed at an interval in the vertical direction with respect to the intake port, and one exhaust port for exhausting from the passage is formed,
The connection member according to claim 1, wherein the intake port and / or the exhaust port is formed in a longitudinal direction along a circumferential direction of the passage. In a connecting member whose upper end is connected to a storage tank for storing the material and whose lower end is connected to the molding machine, a passage for allowing the material to pass in the vertical direction, and at least one intake port for sucking air into the passage And at least one exhaust port that is formed at a distance from the intake port in the vertical direction and exhausts from the passage so as to face the passage.
Intake from the intake port into the passage and exhaust from the exhaust port, in the passage, along the vertical direction, to generate an air flow from the intake port to the exhaust port,
The method of forming an air flow, wherein the exhaust port exhausts an air flow from an upstream side in a direction from the intake port toward the exhaust port.